Cellular immunity of patients with hepatocellular carcinoma was investigated by measuring T cell subsets (Tγ, Tμ). The results were as follows. 1) In many patients with hepatocellular carcinoma, the percentage of Tγ were elevated, while the percentages on Tμ were depressed, compared with healthy control. 2) The percentage of Tγ well reflected the severity of symptoms of hrpatocellular carinima, whereas the percentage of Tμ seemed not to be necessarily associated with clinical states. This implies that the percentage of Tγare more helpful in assesing the severity of hepatocellular carcinoma than those of Tμ…